Nut-lock.



J. SMITH.

NUT LOCK.

APPLICATION FILED FEB. 4, I914.

1,189,819g Patented May18, 1915.

- WITNESSES, lA/VE/VTOR To all whom it may concern:

. eration.

JOHN SMITH, OF NEW YORK, 11'. Y'., ASSIGNOR To s ain JoHN SMITH AND..HE1\TRY UT'ARD, 01? NEW YORK, N.- Y.

N UT-LOGK;

JOHN SMITH, citizen Be it known that I, p A

and resident of the of the United States, borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improvements in Nut- I ocks, of which the following is a specifica- My device operates by means of a certain spring tension and for that reason it issubject to a wide range of adjustment and not limited .in the'scope of its application.

The construction and advantages thereof will be fully set forth as the specification progresses.

The following is what I consider the best means of carrying out this invention.-

, The accompanying drawings form a part of this specification, in which- Figure 1 shows in plan the blank from which my device is to be formed. Fig. 2 is an elevation of the blank after the looking angle has been produced. Fig. 3 shows a nut adapted to be locked by my device.

Fig. 4 shows a fractional part of a plate or other member in which portions of the additional locking means are arranged and Fig. 5 shows my completed device in operation.

Similar reference numerals indicate like parts in all thefigures where they appear.

In describing my invention I desire it understood that the device may be used in combination or in connection with nuts and bolts of any kind, or upon screw-threaded ,machine partsthat are not trulynor com- 'm'only termed nuts and bolts. For the purpose of simplicity and so that I the device in its operation'ma'y be fully understood I have however elected to show a common ordinary bolt 1, upon which is screw-threaded a thumb-nut 2. The body of this thumb-nut. though of ordinary construction is provided with a groove 3, which is a V-shaped groove Specification of Letters I atent.

' of the plate,

Patented May is, 1915.

Application filed February 4,1914. Serial No. 816,605.

extending quite across the lower face of the nut, and although this groove cuts away a portion of the threads it is my intention that the relative depth of this groove will not ,v've'aken the body of the nut or the holding strength of the threads thereof.

Arranged upon the bolt and between the head thereof, and the nut I have showri fractional portions of two plates 4 and 5 and in the up er rality of recesses or center punch marks 6 arranged in a circle and surrounding the central perforation 7 through which the bolt will pass. The object of these recesses 6 will be later set forth.

The lock proper comprises a strip of any suitable metal as shown in Fig. 1 but I prefer that the metal should be spring brass or tempered steel as I depend to a certain extent upon the spring tension of this member to produce and maintain an efficient locking of the nut. The plate as I have arranged it is provided with two perforations spaced apart from each other and arranged approximately as shown at 8 and 9. Surroundingthe perforation 8, the plate is enlarged and inthis enlarged portion and at a suitable point therein I depress the metal downward to form the teat orprojection 11. The remainder of the plate 10 is the extension 12 into which the perforation 9 has been formed. In this extension 12 I make an angular bend 13 by depressing the metal the apex of the angle should be on a line transverse to the axial line of the perforation 9 in this way two shoulders will be formed extending each side of theperforation 9. The plate is plate 5, I have shown a plu-- upwardly one at now ready to be bent and in bending Itake care that the radius of the bend will not be so small as to destroy the elasticity of the metal. The bend takes place approximately upon the line 13 and results'in the formation of the loop 14 shown in Fig. 5. The parts are now ready to be assembled, before assembling however, it will be observed that the bend in the plate has been in a direction that will provide that the angle 13 and the teat 11 project outward or away from each other. In assembling the lock is placed upon the plate 5 so that the teat 11 will enterone of the recesses 6. The nut is next placed upon the bolt and screwed down until sufficient tension is acquired, a further turn then ticularly thinand light material may be used in forming the locking member. It will vice in securing together small electrical parts which although they must be held in reliable engagement are not subject to great strain, and in this work I have found that the teat 11 and the recesses 6 may be dis pensed with and I have also found that paralso appear. obvious that the general shape of the locking member may be changed as desired and that other modifications may-be made within the scope of the appended claims without departing from the principle or sacrificing the advantages of this iIlVGIl? tion.

Having carefully and fully described my invention what I claim and desire to secure by Letters Patent is r 1. A nut lock having a bolt and a nut operable thereon, said nut being provided with said nut, a perforated resilient member provided. with a plurality of perforations are ranged upon said bolt and-provided with a raised portion extending across the axial day of February 1914. a recess extending across the axial line of 2. A nut lock consisting of a resilient member folded or bent upon itself so that the ends extend approximately, parallel to eachother, said resilient member being provided with a plurality of perforations and i an angular depressionoextendin'g across the axial line of one of said perforations as herein specified. a

3. A nut lock comprising a resilient metallic member provided with a plurality of perforations and having one end enlarged a depression formed in the smaller portion of said member and a bendproduced insaid member alining the'oerforations to allow a screw-threaded part to extend therethrough,

said depression lying partly on each of two sides of said screw-threaded part as herein specified.

Signed at New York city,in the county of Kings and State of New York, this second JonN SMITH. lVitnesses:

HY. UTAND, CHAS. A. 'HAVILAND. 

